diff --git a/test/test.js b/test/test.js
index ee4c47e..d14df42 100644
--- a/test/test.js
+++ b/test/test.js
@@ -4,7 +4,7 @@ var SerialPort = require("serialport");
 var path = require("path");
 var test = require("tape");
 
-const exec = path.require(process.env.IDF_PATH, "components", "esptool_py", "esptool", "esptool.py");
+const exec = path.join(process.env.IDF_PATH, "components", "esptool_py", "esptool", "esptool.py");
 const portString = "/dev/serial/by-id/usb-Silicon_Labs_CP2102_USB_to_UART_Bridge_Controller_SERIAL_ID-if00-port0";
 
 const buildPath = path.join(__dirname, "lora32", "build");